主讲人简介：

王玉清教授1983年毕业于中山大学，1996年澳大利亚 Monash University应用数学博士，2000年-至今夏威夷大学气象系教授。王玉清教授在大气动力学，热带气象，海洋-大气-陆地相互作用，全球、区域气候模拟等方面做出了重要工作，特别是在台风动力学方面做出了重要贡献，发表文章140余篇。

 

讲座简介：

In this study, the simple energetic model is modified to understand the observed intensity-dependence of the tropical cyclone (TC) intensification rate (IR) on storm intensity, with an IR peak occurring when the maximum sustained surface wind speed of the TC is around 35-40 m s^-1. According to the modified conceptual model, the TC IR is controlled by the intensification potential (IP) and the weakening rate due to surface friction under the eyewall. The IP is determined primarily by the potential energy available for a TC to develop, which is a function of the thermodynamics of the atmosphere and the underlying ocean, and the dynamical efficiency of the TC system, which depends strongly on the degree of convective organization in the eyewall and the inner-core inertial stability of the storm. At relatively low TC intensity, the IP of the storm is often larger than the weakening rate due to surface friction, leading to an increase in the TC IR with TC intensity. As the storm reaches an intermediate intensity of 35-40 m s^-1, the difference between the IP and weakening rate due to surface friction reaches the maximum, corresponding with the maximum IR. Later on, the IR decreases as the TC further intensifies because surface friction increases with TC intensity at a faster rate than the IP. Finally, the storm approaches its maximum potential intensity (MPI) when IR becomes zero. The modified conceptual model is well validated with results from observations.